Related by context. Frequent words. (Click for all words.) 74 migrating northward 55 severe droughts 54 glaciers melted 53 recolonized 53 ancestors migrated 52 eastern Dakotas 51 Triassic Period 50 explorer Hernando 50 drifting northward 50 Serving Selma 50 www.thestar.com online 50 northward migration 50 migrate northward 49 domesticated pigs 49 Ice Ages 49 salinization 48 Tornadoes rip 48 Yangtze rivers 48 dikes dams 48 unusually heavy rains 48 Bonnet Carre 47 Pleistocene epoch 47 freshwater marshes 47 Mississippi River 47 Purple loosestrife 47 delicate marshes 47 oxbows 47 sediments deposited 47 By CHERIE WARD 47 northernmost reaches 47 rust spores 46 room temperature colliders 46 Posted -# sec 46 Lagunitas Creek 46 NASA MODIS Image 46 Spanish Conquistadors 46 Swollen rivers 46 forming Humberto 46 disappearing glaciers 46 saltwater marshes 46 Citrus greening 46 Cretaceous Period 46 tributary rivers 46 Jurassic Period 46 climatic extremes 46 overhunting 46 nineteen thirties 46 permafrost melts 46 interglacial period 46 periodic droughts 46 coastal lowlands 46 Damming 46 thin rainbow sheens 46 Southeasterly winds 46 sicken humans 46 shortnose sturgeon 45 dolphins wash ashore 45 freshwater ponds 45 strawberries tomatoes 45 Gypsy moths 45 Infestations 45 cypress swamp 45 overwinters 45 salinisation 45 chytridiomycosis 45 mudflat 45 freshwater springs 45 warmings 45 Severe drought 45 receeding 45 catfish ponds 45 torrential monsoon downpours 45 inundations 45 Bayous 45 guanacos 45 Scientists theorize 45 worsening droughts 45 functionally extinct 45 Eyjafjoell volcano 45 Beringia 45 milder winters 45 warmer wetter 45 refugia 45 BP PLC Deepwater Horizon 45 feathered dinosaurs 45 upwellings 45 southward migration 44 named Xynthia 44 desertified 44 Tallapoosa River 44 By LEANN ECKROTH 44 hottest driest 44 Moderate quake jolts 44 Ethiopian highlands 44 La Nina cooling 44 holocaust Racism hallmark 44 prairie pothole region 44 longleaf pine forests 44 intensively farmed 44 equatorial waters 44 river drainages